Heater for automobiles



192 Much 15 7 H. HANsoN HEATER FOR AUTOMOBILES Filed Dec. 23, 1924 1 j i 1 I 2 Z F /,/s 7 Ww 3 Z 9. j U /7 7 w W, Nx/M/ /f u. .lllllo lwvf m ``w\\ 7 5 2 @M l r11f \\||:ll 1 1/ erzaf" Herma/r? 9.22502? elevationa PATENT OFI-fica, i

:mum weon, or manson.-

usaran. ron Luminarias."

.maman mei maduras', .anni in. 751,711.' f

My invention. relates to an improved de-4 vice ,for heating the cab of an automobile withjheat derived from the exhaust of the en ne. 'Y

n object of the invention is to provide a simple and effective device that may be built conveniently into an automobile structure at the factory or thereafter readily installed for use. Another object of 'the invention is to suply a hot water heater, wherein a heater duct is associated with'an exhaust duct of the automobile engine and, wherein, the lusual elements of the water cooling s steml for the engine are employed for circu ating and storage urposes. 0

With the oregoing and other objects in view, which will appear in the following descri tion, the invention vresides in the novel com ination and arrangement of parts and in the details of construction hereinafter described and claimed.

In 'the drawings, Fig. 1 is'an elevational `view illustrating an embodiment of my i11- vention as ap lied to an automobile, the usual parts o the automobile being diagrammatically displayed, `partly in dotted lines and artly in solid lines; Fig. 2 is an Fview of the heater appearing in Fig. 1, the same being shown-'in connection with the engine illustrated in said Fig. 1;

Fig. 3 is a plan view of the structure shown in Fig. 2; and Fig. 4' is a sectional view taken on the line 4 4 of Fig. 3, the same illustrating in detail the'water jacket for the exhaust manifold of the engine.

Reference being had to the drawin it will be seen that the illustrated automo ile includes the usual cab 10 and water jacketed internal combustion engine 11, alsol the usual cooling system comprising a water cooling reservoir 12, water connections 13, 14 and 15 and water pump 16 for circulating water from the reservo1r`12 through the cylinder jackets of the engine 11 and back to said reservoir 12.

I have shown a heater duct I17 associated with that part of the exhaust duct 18 known as the exhaust manifold. In said disclosure, this heater duct 17 comprises a water cha-mber formed between the exhaust manifold 18 and a jacket 19 spaced from the upper-` and outer side's of said manifold. Inside of the cab 10 of the automobile and above the heater duct 17 is a radiator 20, the same consisting in the present instanceof a/pipe `the heater duct 17. Leading ,from the rearward end of 'the heater duct 17, at its upperl 1,az1,iaav

uponloopin an inclined plane. g Taking'o from the outlet side of the wa ter pump fthe ower the forward end thereof. This pipe portion, is a sup ly pipe 22, the same being connected with t e upper branch of the radiator 2Q. A returnh pipe 23 connects the lower portion of the radiator 20 with the upper` rtion of the reservoir 12 of the wayter coo mg system. From the foregoing deis forced by the pum reservoir 12 into the eaterduct 17. fing through thisduct the water is heated and thence which the heat of the water is radiated into the cab 10. Leaving the radiator 20 under the influence of the pump 16, the cooled water returns through the pipe 234m the reservoir 12. Thus it will be seen 'that the pump 16 of-the usual water cooling system is employed as the water circulating medium in my heating device. Also, it will be'understood that such usual system constitutes water storage for my device and that the res- "eivoir 12, vented in the conventional manpasses to'the radiator 20 from scription, it will be understood that water 16 from the cooling i Mov-P ner, allows for the expansion of water in' said device.

Noting the relative' arrangement of the heater duct 17 radiator 20 and reservoir 12,

'I 'wish to call attention to the fac-t that Athe water level in the latterv stands above the radiator 20,also that the radiator is positioned above the heater duct 17. Under said arrangement of said elements, a natural flow of water is induced, by gravity, in the heating device. This arrangement augments the action of the water propelling pump in a heater., as shown, and even permits of the omission .of such a pump.

The feed pipe 21 is fitted with a valve 24,

which is adapted not only to regulate the flow of water from the pump 16 to the heater "duct 17 but also to entirely arrest the flow 4of water'through said pi 21 and thereby cut-olf the heatingv device. Fitted in the return pi e 23 is a conventional control valve 25. Sai valves 24 and 25 may be used singly or jointly in cont-rolling the iiow of water through their respective ipes 21, 23, the valve 24 serving to control t e ingress of water to the heater duct 17 and radiatcr 20 c and said valve 25 serving to controly the egress of water from said heater duct ,.11 and radiator 20. Fitted in the feed pi 21 is a chgck-valve 26 of conventional design. :This check valve 26 is arran ed to obstruct the backward flow of water rom the heater duct 1,7 to the pump 16 under ressure built .up

in the former. Said chec valve 26 prevents the damaging of the pump 'by back ressure and it also rovides for the circuation of water in tie device b resolvingany pressure in the heater duct 1 into force tending to urge'water therefrom into the radiator 20 and through the same to the reservoir 12. It, therefore, will be understood that a pump, while ver effective, is not essential tooperativeness o the device and. that a water propelling force may be derived in the nature of pressure created in the heater duct 17. The circulation of water in vthe device by such internal pressure is augmented by gravitation, under an arf rangement of parts, as shown, but will not be arrested under an altered arrangement, wherein circulation by gravity is interfered with by changes in elevation of the parts.' To avoid excessive strains Within the heater duct 17, supply pipe 22, radiator 20 and return pipe 23 and between the check-valve 26 andL control valve 25, I provide theheater duct 17 with a conventional safety valve 27;

Changes in the specic form of my inveni' tion as herein disclosed, *may be made with in the scope of what is claimed without departing from the spirit of my invention. Having described my invention, what l claim as new and desire to protect by Let ters Patent is:

l. The combination with an automobile driven 4by an internalcombustion engine equippedwithI a water cooling system includinga cooling reservoir of an auxiliary heater associated with and heated by'an exhaust duct of the engine at a position beneath the water level in *id reservoir, a radiator in the cab of the automobile, a feed 'line leading from' said reservoir to said auxiliary heater, a check valvecin said feed,

line to prevent the return flow of Water therethrough by pressure built up in saidV auxiliary heater, a supply pipe connecting the, auxiliary heater with the radiator and a return pipe connecting said radiator with said reservoir.

2. In combination with the water cooling system of an internal combustion engine, a radiator, a feed pipe connecting said cooling system and radiator, a return pipe connecting said radiatorand cooling system, an auxiliary heater positioned in said feed pipe and a check valve situated at the inlet of said heater for preventing back flow through said feed pi e.

3. In com ination with the exhaust maniold'and Water cooling system of an internal combustion engine, a radiator, a `iced pipe connecting said cooling system and radiator, a return pipe connecting said radiator and cooling system, a casing formed integral with said exhaust manifold 'and providing an auxiliary heater, said auxiliary heater being connected in said feed pipe, and a check valve situated at the inlet of said heater for preventing back iowthrough said,

nnnnaniianson 

